Gilbert, C. M., & Christensen, M. N. j. a. (1967). Physical geology: Laboratory course (2nd ed.). McGraw-HIll.
Chicagoスタイル(17版)引用形式Gilbert, Charles Mervin, , Mark N. jt. author Christensen. Physical Geology: Laboratory Course. 2nd ed. New York: McGraw-HIll, 1967.
MLA(9版)引用形式Gilbert, Charles Mervin, , Mark N. jt. author Christensen. Physical Geology: Laboratory Course. 2nd ed. McGraw-HIll, 1967.
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